John livingston



(NoModeL) -J.'LIVINGSTON.

ROLLER MILL. No. 275,675. Patented Apr. 10,1883

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UNITED STATES PATENT OFFICE.

JOHN LIVINGSTON, OF DAYTON, OHIO, ASSIGNOR TO STOUT, MILLS & TEMPLE, OF SAME PLACE.

ROLLER-MILL.

SPECIFICATION forming part of Letters Patent No. 275,675, dated April 10, 1883.

' Application filed August 10, 1882. (No model.)

To all whom it may concern Be it known that I, JOHN LIVINGSTON, of Dayton, in the county of Montgomery, and in the State of Ohio, have invented certain new and useful Improvements in Roller-Mills for the Reduction of Grain and Middlings; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to what are known as roller-mills, and it consists in a peculiar construction of feed-box, and the combination therewith of a suction attachment for carrying off the branny matter and flufi before the grain enters between the grinding-rolls, as will be fully described hereinafter, and pointed out in the claims.

1n the drawings, Figure 1 is an elevation of my device in position between the hoppers ot' a roller-mill, only a portion of the latter being shown. Fig. 2 is a vertical section of the same. Fig. 3 is a front view of the feedbox with the suction-pipe removed, and Fig. 4 is a portion of the same with the suctionpipe in place.

' A A arethe grinding-rolls, and K is the hopper that incloses them.

B is the feed-roll,suspended in the mouth of the feed-box just under the mouth of the upper hopper, H. The flow of grain from the hopper H is regulated by the usual slides, D and I. p

O is the feed-box, through which the grain must pass on its way from the upper hopper,

H, to the lower hopper, K. it is securely fastened to the lower hopper, and, for convenience, I make it in two parts-that is, I pro vide it with a trough, O, the flanges of which are secured to the sides of the front or main portion by a tapscrew, (I, passed thrgugh ears a in the flanges of the trough and through the sides of the main portionsof the feed-box, this connection admitting of the removal of the trough to give access to the feed-box.-.

The upper portions of both the box 0 and its trough are conoaved out, so as to admit the feed-roll B between them. The top of the opening, 0 in its front, and over this opening I secure the funnel E of a suction-pipe, E, and I connect this pipe E with a blower, or any other apparatus conveniently situated. To give access to the feed-box from above, 1 provide it with a door, F. Where several mills are arranged in line and runtogether, all their feed-boxes may be connected with a single main pipe, and therefore one blower may serve to carry off the dust from all the mills.

The operation of my device is very simple, and is as follows: As the grain falls-from the hopper H it is carried down into the feed-box U by the feed-roller B, and on its way to the hopper K it is subjected to the act-ion of a current of air, which enters through the top of the trough O, and, passingthrough it, is drawn out through pipe E by the blower, (which latter I have not deemed it necessary to show,) and this current, uniting with another from the interior of hopper K, carries everything that is lighter than the grain off through said pipe E to the dust-bin of the building in which the mill is situated, allowing the grain only to reach the rolls. The current from the interior of hopper K also carries on the heat that is generated by the action of the rolls, and thus prevents the injury to the product that is liable to result from overheating.

Having thus fully described my invention,

able trough C, and flanged opening'c in 9 combination with funnel E, suction-pipe E, hoppers H K, slides D I, feed-roll B, and grinding-rolls A A, substantially as set forth. In testimony that I claim the foregoing I have hereunto set my hand, on this 31st day of July, 1882, in the presence of two witnesses.

JOHN LIVINGSTON. Witnesses:

ATLAs L. STOUT, S. M. SULLIVAN. 

